Typewriting machine



March 2 1926.

J. B. HOLDEN TYPEWRITING MACHINE ML TT [IHNEN Filed Sept. 8, 1923 TQQ WITNEEEE './JLZf/f Wma@ EL. [Lgf Patented Mar. 2i, 1926.

UNITED STATES PATENT OFFICE.

JOSEPH B. HOLDEN,`OF SYRACUSE, NEW YORK, ASSIGNOR TO REMINGTON TYPE- WRITER COMPANY, OF ILION, NEW YORK, A. CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed September 8, 1923,

To all 107mm it may concern:

Be it known thaty I, JOSEPH B. HOLDEN, a citizen of the United States, and resident of Syracuse7 in the county of Onondaga and State of New York, haveinvented certain new and useful Improvements in Typewriting Machines, of which the following is a specification. i f

My invention relates to platen adjusting devices for typewriting machines, and its object is to provide new and improved meansA the platen and carriage of a front strikey typewriting machine, the carriage and platen of theSmith Premier No. GO machine lieing herein illustrated, but the nature of the invention is such that it may be readily adapted to other styles of typewriting machines. In carrying out the invention I pro-y vide simple and effective-means for raising or lowering one part of the platen carrier or carriage relatively to another art to change their normal set relationship thus raising or lowering to a corresponding eX- tent and resetting the printing face of the platen; and I alsoy provide means co`opera tive with the axle of t-he platen to adjust the platen on its support in a fore-and-aft direction so as to adjust the printing face substantially horizontally for thepurpose more especially of bringing it into proper cti-operative relationship with the anvil or striking abutment of the type bars. My invention will be described in detail in connection with the` Aaceompanying drawing, wherein Figure 1 is a fragmentary end view of the carriage and its bearing as viewed from the left-hand side, parts being sectioned away for the sake of clea-rness and one of the type bars being shown in printing position. c

Figure 2 is a view corresponding to Fig. 1 buttaken from the right-handside, showing the right-hand end of the platen and carriage `in elevation,

Serial No. 661,619.

Figure 3 is a fragmentary front view partly in section of the platen and associate parts.

Figure et is an enlarged fragmentary end view partly in section showing some of the parts of Fig. 1 after readjustment.

Figure 5 is a fragmentary horizontal sectional view taken on the plane indicated by the section line 1--1 in Fig. 1 and looking downward.

Rising from the top plate 1 of the machine are a pair of stationary brackets, 2 spaced apart, one disposed at each side of the machine, and each bracket being rearwardly curved or goose-necked. These brackets are only fragmentarily shown in the drawing but are like the brackets shown in the Smith Premier #GOinachine and in the application of E. E. Barney #650,683 filed July 20, 1923. Secured to the upper end por-. tions of the brackets 2 by screws 3 is a sta tionary guide rail 4, the lower portions of the brackets having secured to them by screws 5 aguide rail G. The two guide rails t and 6 are parallel and formed with oppositely faced V-shaped grooves which receive antifriction rollers 7, said rollers likewise co-opcrating with V grooves formedin the top and bottom of a race rail'or slide bar 8 that serves as thel rear bar of a traveling platen carriage. Said carriage further comprises en'd bars 9 extending forward from thel ends of the bar S and adjustably secured thereto in a new manner hereinafter to be described. The carriage comprising the end bars 9 and rear bar 8 rotatably supports a cylindrical platen 1() provided at one end with a line space ratchet wheel 11 and having axle portions 1S? which project from the ends of the platen and are adjustably supported on the end bars 9V in a novel manner presently' to be described. The projecting ends of the axle portions 12 receive the usual finger wheels 13 having hubs 14 which are secured by set screws 15 to said axle portions. The usual line spacing devices co-operate with the ratchet wheel.. A set of type bars are provided that are adapted to co-operate with thefront face of the platen 10, one of these type bars 16 being shown in striking or printing position in Fig. 1, from'which it will be observedv that when at the printing point the type bar codoperates with a stationary abutment or yanvil 17,

lightness.

each Theca riageparts or endibars 9 are adjustably connected'with the carriage part or cross bar 8 in such a way that their setA relationshipmay` be altered. ln other wordsr the endibarsr El n'iayhe raise lor loweredto slightly raise or lower the platen thus brine'- ing the printing face thereof in propervertical position in parallelism with the guide bars or rails et and 6, andso that the platen may be correctly adjusted on its supporting` frame or carriage properly to receivel the iinprints ofthe types, vertically considered: To this end each end bar 9 is formed at its rear with an inwardly projectingv portion or footingr 9 which extends at right angles to the body of thewendbar and is formed alongl its lower rearward face with a slightly projecting rib, strip or contact device 18. The rear face of this rib or strip 18 is machined or finished in order to co-operate or engage closely with the lower portion of the front face of a. boss or projecting portion 19 formed at the front of the carriage bar S' and which iscorrespondingly machined. fr willbe clear from Fig 35 thereV is one of these bosses at each end of the rear bar 8, the bosses being rectangular in shape; and in between them the rear bar `is preferably out out, as indicated at S, for the salte of The end bars- 9 aresecured to bar or cross bar S each by a headed screw Q .vhich passes` forward freely through a hole 21 in the rear bar and is threaded into a tappedfhole in the associate footing 9, the head of the screw 20 being housedin al counter-sink or enlargement 22 of the-rear part of the hole 21. 'llhescrew or tying` device 2G .is disposed about atV the middle of the footing,` or eXtension passing; through saidv footingL at= about midway of its-length from top to-bettom as well as of its'width, as will-be understood from-a consideration ofFigs; 1 and YArranged between the footing 18 and the boss or projection 19 is a key or'short plate 23 which is housed in oppositely facing;V slctways in the boss and footing,Y and isl formed with a hole for the passage of the tie or binding screw 20.V The constrtuvtion is-such tha t when the screw is tightened it binds or clamps the end bar to the rear bar, the key *33' preventing accidental slidable displacement in a vertica fdirectionbetween the end' bar andV the rear bar. DirectlyY above screw 20,'` a smaller headed screw 2l is threaded through the rearA bar,- the head of said screw being received in aV depression or counter-sink in said bar and its point project-ingforward and beinel adapted' to co-operate with the upperportion-ofthe rear faceof the footing 9a. It will be observed, moreespeciallj.r from Figs; 1' and-*2, thata space or? opening indicate-dv` at' 18a' lies between the opposing feces et te@ toetjes'- 'ef Hcrei-r bare die the rear space corresponding substantially to the width or thickness of the strip or'rib 18. The construction in effect provides a triangular or three-point bearing or contact between each footingtltL and the rear bar, the contact being,` provided by the strip or contact device. 185 extending' substantially throughout the width of the footingat its lower side, and'by the screw 2l which provides an adjustable Contact between the bar 8 and the upper end portion ofthe footing at about midway of its width. By first looscnin l the bindingl screws 2() and then screwing the Contact screw, in or out to the desired extent, the platen will be correspondingly lowered-or raisedwhen thereafter the binding screws are tighteneth this result of' course being due to the new adjustment of the contactfaces of the screws 2li. In effect, the end bars and the platen are swung or moved slightly down or up, pivoting on the rear bar atl the contact between the strip 1S and said rear bar, the printing,l face of the platen being slightly raised or lowered. to the desired extent as a result. ltwill be apparent that the carrier parts or end bars are independently adjustable thereby enablingv adjustments at the opposite end p0rtions of the platen to be separately effected.

ia'eans are alsoprovided for adj listing` the printing' face of the platen in forc-and-aft direction', such adjustnjient being4 more particularly effected' for the purpose of bringing' the jninting face. into correct relationship withv the type bar anvilv 1T. Saidforeand'aftv adjusting means comprises two anged sleeves-26 and Q? arranged at oppo site ends ofthe platen, the sleeve 2G being' received in an elongated opening indicated et 52S in the left-handl endbar 9. and the sleeve?.Tbeing` received ina similar opening G0 in the right-hand endfbar 9. The flange 3l of the ett-hand sleeve ii-( is oval in shape. and is disposed outside of' and contiguous to the outer face of the left-hand end bar while the circular flange 32 of the sleeve 2T is corresptnulingly arranged outside the right-hand end bar t). rFlic slcevesare bored out to lit over the asile portions 19]. the lefthand sleeve being cmintgilwred as indicated at: 3 3 so that. the beariiw' portion 31tol' said sleeve is quite narro 'Y thus facilitatinp` alignment and reducing friction. Similarly` the sleeve-2 is counterbored as indicated at '35 providing a comparatively .narrow bearing)Y surface 36. Oval washers 3T are ar- ;i iged outsideof and'in'contact with the respective sleeves 26=and127- The right-hand sher is adjacent to the inner end ofthe heb 19t of the right-hand lingery wheelA` 13, while inierj'osed between the left-hand washer 3T' andthe associate hub l-l. a spacina` sleeve Pivot screws 3) threaded into the lower portions of-theendbars Spi-vtaly'supjiert the .leeves-26'A and. E27' and-seliti use

cure the lower end portions of the associate washers, said screws ybeing provided with heads which when the screws are tightened serve to clamp the sleeves and washers to the end bars. The upper end port-ion of the sleeves 26 and 27 are formed respectively with elongated slots 40 and 41 which are centered on the screws 39. These slots receive headed binding orv clamping screws 42 which pass through round hoes in the associate washers 37. On the other hand, the washers are formed with slots or elongated holes 4S to afford free passage therethrough and side play of the shaft portions 12. The purpose of the washers is merely to prevent the adjusting sleeves from moving accidentally after they have been adjusted and before the screws 3S) and 42 have been tightened sufficiently (to hold them, the washers themselves not being adjustable. The construction is such that when the set screws 3) and 42 are loosened, the bearing sleeves 26 and 27 may be swung either backward or forward slightly to the limit of the slots 40 and 41 about the screws 39 as centers, the elongated holes 28 and 30 in the end bars 9 affording suflicient play of the sleeves for this purpose. Thismovement of the sleeves correspondingly moves the platen which is supported by them, the printing face ofthe platen `either being advanced or drawn backward until it has been brought into correct relationship with the contact ,face of the anvil 17. After adjustment, the screws 39 and 42 are tightened, fixing the platen bearings or sleeves 26, 27 on the platen frame or carriage comprising the end bars 9, and thus confining the platen to a fixed path of rotation due to its axle or shaft portions 12 rotating in the bearing'portions 34 and 36 atthe left-hand andright-hand ends of the carriage.

(l0-operative with the right-hand sleeve 27 Vat its inner ends is a platen end-thrust bearing ot' ordinary.` construction comprising a ball-race collar 44 which abuts against the outer end of' the hub 45 of the right-hand platen head 46. End thrust balls 47 bear on the collar 44 and on the associate sleeve 27, said balls being controlled by a separator 1-.S and housed within a thimble-like retainer 49. The function and operation of the platen adjusting devices will be clearly understood from a comparison ofrFig. 1 and F ig. 4, Fig. 4 showing the sleeve 26 readjusted from the Fig. 1 position to the extreme forward position resulting in a corresponding readjustment of the platen at its left-hand rnd portion. The riglitdiand adjustment is of course` similar. It will be apparent that there may be yvariations in the adjustments at the opposite ends of the platen, the sleeves Zo and 27 being, within limited extents, settableindependently of each other.

By my present invention there iS provided simple and convenient means for effecting a universal. adjustment, or adjustment in any desired direction, of the printing face of the platen on its support and relatively to the carriage track-ways and the type bar anvil. 'Iheadjustments are all made preliminary to using the machine and said adjustments are not affected by the insertion of paper, being independent of the work sheets whatever their number or thickness. Moreover` suchv adjustments may be made to any desired extent, not being limited to definite or prescribed distances or extents.

Various changes may be made without deA parting from my invention.

That I claim as new and desire to secure by Letters Patent is y 1. In a typewriting machine, the combination of a platen, a platen carriage comprisinga rear bar and a pair of end bars having a setfnormal relationship, and means for affording a swinging movement of said end bars relative to said rear bar to vary their normal relationship and alter the normal position of the plate-n in a vertical direction.

2. In a typewriting machine, the combination of stationary guide-ways, a bearing part slidably, supported on said guide-ways, platen supporting parts carried by said bear ing part, a platen on said supporting parts, means for securing said supporting parts in fixed relationship with said bearing part, and means for affording variation in said fixed relationship to any desir-ed extent.

3. In a typewriting machine, the combination of a platen, a platen carriage comprising-a plurality of parts, and means for affording relative adjustment of the parts to vary the normal position of the printing face of the platen, said means comprising Vtying devices and also adjustable contact screws against which certain of said parts 'are adapted to be held by said tying devices.

4. In a typewriting machine, the combination of a platen, a platen carriage comprising a rear bar and end bars projecting forward from said rear bar and supporting the platen, adjustable means carried by said rear bar against which said end bars are adapted to abut, and screws for securing said end bars against said means in fixed relationship to said rear bar.

5. In a typewriting machine, the combination of carriage guide rails, a platen, a carriage for said platen comprising a cross bar (zo-operative with said guide rails, and end bars secured to said cross bar, said end bars comprising footings formed with contact faces, abutting screws carried by said cross bar and against which said footings are adapted to bear, and means for securing said end bars to said cross bar.

6. In a typewriting machine, the combination of stationary upper and lower guide lll) lill) rails, a platen, a. platen carriage` comprising` a slide bar and endv bars, roller bearings co.operating with said slide bar and with said guide rails, connecting. means comprising triangular contact devices between said end bars and said slide bar, said means affording an adjustment of at least one point of each triangular. contact, and means for detachably securing said end harsy to said slide bar.

7. In a typewriting. machine, the combination of a platen, a4 platen carriage comprising a pluralityv of parts, and setsof in-y dependent means. co-operative with. the ends ot' said carriage for aii'ording relative adjustment ol: the carriage partsat each end separately so as to vary the normal positions. of. the corresponding end portionsot the platen.

8. lin a typewriting machine, the com-bination of a, platen, a platenv carriage coni; prising` a plurality. oit parts, andineans cooperative with each end of Saidcarriage for ailording independent relative adjustment ot the parts at each end so as to v rytlie normal adjustment ot the correspondingv end portions of the platen in an np and down direction.

9. ln a jf'gpewriting machine, the combination of a platen, a. platen carriage` coin,- prising' across bar and end bars, triangular contact devices between said, endI bars and raid: cross bar, means for affordingr an adjustment of at least one pointA of each triangularv contact and for. securing said end barstosaid cross bar, keys inserted between said cross bar andsaid end bars to prevent downward relative displacement between said end-bars and said cross bar.

10. Ina typewriting machine, the combination` of a platen, a platen carriage, and bearings for said platen at opposite ends ot' said carriage, said bearings being` independently adjustable to afford adjustments of the platen in a fore-and-aft direction.

ll. In ay typewriting' machine, the combination of a platen, a carriage comprising,` end bars, bearing` sleeves in said end bars for said platen, pivots supported on said end bars, and means for affording swinging movements of said sleeveson said pivots and for clamping said sleeves to said end bars.

l2. In a typewriting machine, the combination of a platen, a carriage comprising end bars,l bearing sleeves on said end bars for, said. platen, means for affording swing ing movements of said sleeves and for clamping said sleeves to said end bars, and washer plates interposed between said sleeves and said. means.

13. In ay typewritingv machine, the combination of a platen, axle portions projecting,` therefrom, a carriaeI comprising end bars, bearing sleeves on said end bars for -said axle port-ions, pivots for said sleeves, screws for adjustably clamping said sleeves, and nonadjustable washer plates. clamped also by said screws.

Signed at Syracuse, in the ,county of Onondaga'and State of New York this 4th day of Sept. A. D. 1923.

` JOSEPH. B. HOLDEN. 

